On Thu, Aug 12, 2010 at 01:34:52PM +0200, Peer Heinlein wrote: > protocols = lmtp imap sieve Because 'sieve' is no protocol. Should be in the corresponding Delivery Agent's settings like: protocol lmtp { mail_plugins = $mail_plugins sieve } http://wiki2.dovecot.org/LDA/Sieve/Dovecot Regards Thomas